Warning: Permanently added '[localhost]:35141' (ECDSA) to the list of known hosts.
2021/12/06 11:29:39 fuzzer started
2021/12/06 11:29:40 dialing manager at localhost:35719
2021/12/06 11:29:40 checking machine...
2021/12/06 11:29:40 checking revisions...
syzkaller login: [ 36.395278] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:29:40 testing simple program...
[ 36.441579] cgroup: Unknown subsys name 'net'
[ 36.443104] cgroup: Unknown subsys name 'net_prio'
[ 36.445417] cgroup: Unknown subsys name 'devices'
[ 36.446992] cgroup: Unknown subsys name 'blkio'
[ 36.473615]
[ 36.474020] =========================
[ 36.474834] WARNING: held lock freed!
[ 36.475642] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 36.476841] -------------------------
[ 36.478532] kworker/1:1/32 is freeing memory ffff8880100bb800-ffff8880100bb9ff, with a lock still held there!
[ 36.480673] ffff8880100bb948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.482583] 3 locks held by kworker/1:1/32:
[ 36.483485] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 36.485713] #1: ffff88800b7ffda8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 36.488259] #2: ffff8880100bb948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.490264]
[ 36.490264] stack backtrace:
[ 36.491211] CPU: 1 PID: 32 Comm: kworker/1:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.492897] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.495335] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.496487] Call Trace:
[ 36.497049]
[ 36.497525] dump_stack_lvl+0x8b/0xb3
[ 36.498342] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 36.499467] ? kernfs_put.part.0+0x334/0x540
[ 36.500408] kfree+0xb3/0x5a0
[ 36.501081] ? kmem_cache_free+0xce/0x640
[ 36.501966] kernfs_put.part.0+0x334/0x540
[ 36.502878] kernfs_put+0x42/0x50
[ 36.503617] __kernfs_remove+0x7ce/0xb00
[ 36.504486] ? lock_is_held_type+0xd7/0x130
[ 36.505426] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 36.506546] ? down_write+0xde/0x150
[ 36.507339] ? down_write_killable_nested+0x180/0x180
[ 36.508444] kernfs_destroy_root+0x89/0xb0
[ 36.509339] css_free_rwork_fn+0xa28/0xf40
[ 36.510250] process_one_work+0xa30/0x1710
[ 36.511152] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.512140] ? rwlock_bug.part.0+0x90/0x90
[ 36.513053] ? _raw_spin_lock_irq+0x41/0x50
[ 36.513978] worker_thread+0x62a/0x13e0
[ 36.514826] ? process_one_work+0x1710/0x1710
[ 36.515780] kthread+0x40c/0x500
[ 36.516487] ? set_kthread_struct+0x130/0x130
[ 36.517434] ret_from_fork+0x22/0x30
[ 36.518228]
[ 36.518782] ==================================================================
[ 36.520301] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 36.521556] Read of size 8 at addr ffff8880100bb940 by task kworker/1:1/32
[ 36.523009]
[ 36.523350] CPU: 1 PID: 32 Comm: kworker/1:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.524997] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.527352] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.528466] Call Trace:
[ 36.529008]
[ 36.529470] dump_stack_lvl+0x8b/0xb3
[ 36.530266] print_address_description.constprop.0+0x1f/0x180
[ 36.531483] ? up_write+0x3ac/0x460
[ 36.532242] ? up_write+0x3ac/0x460
[ 36.533018] kasan_report.cold+0x7f/0x11b
[ 36.533886] ? up_write+0x3ac/0x460
[ 36.534646] up_write+0x3ac/0x460
[ 36.535369] css_free_rwork_fn+0xa28/0xf40
[ 36.536260] process_one_work+0xa30/0x1710
[ 36.537157] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.538124] ? rwlock_bug.part.0+0x90/0x90
[ 36.538999] ? _raw_spin_lock_irq+0x41/0x50
[ 36.539895] worker_thread+0x62a/0x13e0
[ 36.540742] ? process_one_work+0x1710/0x1710
[ 36.541672] kthread+0x40c/0x500
[ 36.542373] ? set_kthread_struct+0x130/0x130
[ 36.543300] ret_from_fork+0x22/0x30
[ 36.544079]
[ 36.544556]
[ 36.544897] Allocated by task 281:
[ 36.545624] kasan_save_stack+0x1e/0x40
[ 36.546446] __kasan_kmalloc+0x81/0xa0
[ 36.547249] kernfs_create_root+0x4c/0x410
[ 36.548123] cgroup_setup_root+0x346/0xb60
[ 36.549013] cgroup1_get_tree+0xc1b/0x1370
[ 36.549891] vfs_get_tree+0x8e/0x2f0
[ 36.550661] path_mount+0x131b/0x1f80
[ 36.551444] __x64_sys_mount+0x27e/0x300
[ 36.552276] do_syscall_64+0x3b/0x90
[ 36.553041] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 36.554094]
[ 36.554424] Freed by task 32:
[ 36.555053] kasan_save_stack+0x1e/0x40
[ 36.555863] kasan_set_track+0x21/0x30
[ 36.556664] kasan_set_free_info+0x20/0x30
[ 36.557528] __kasan_slab_free+0x108/0x170
[ 36.558410] kfree+0xc5/0x5a0
[ 36.559045] kernfs_put.part.0+0x334/0x540
[ 36.559914] kernfs_put+0x42/0x50
[ 36.560611] __kernfs_remove+0x7ce/0xb00
[ 36.561444] kernfs_destroy_root+0x89/0xb0
[ 36.562305] css_free_rwork_fn+0xa28/0xf40
[ 36.563159] process_one_work+0xa30/0x1710
[ 36.564015] worker_thread+0x62a/0x13e0
[ 36.564828] kthread+0x40c/0x500
[ 36.565505] ret_from_fork+0x22/0x30
[ 36.566254]
[ 36.566576] The buggy address belongs to the object at ffff8880100bb800
[ 36.566576] which belongs to the cache kmalloc-512 of size 512
[ 36.569090] The buggy address is located 320 bytes inside of
[ 36.569090] 512-byte region [ffff8880100bb800, ffff8880100bba00)
[ 36.571435] The buggy address belongs to the page:
[ 36.572416] page:000000003f565f91 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100b8
[ 36.574327] head:000000003f565f91 order:2 compound_mapcount:0 compound_pincount:0
[ 36.575857] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 36.577055] raw: 0100000000010200 0000000000000000 dead000000000122 ffff888007841c80
[ 36.578614] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 36.580165] page dumped because: kasan: bad access detected
[ 36.581301]
[ 36.581625] Memory state around the buggy address:
[ 36.582597] ffff8880100bb800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.584062] ffff8880100bb880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.585513] >ffff8880100bb900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.586955] ^
[ 36.588026] ffff8880100bb980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.589481] ffff8880100bba00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 36.590920] ==================================================================
[ 36.623114] cgroup: Unknown subsys name 'hugetlb'
[ 36.624298] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:29:40 Registers:
info registers vcpu 0
RAX=ffffffff84078af0 RBX=ffffffff85032600 RCX=ffffffff8405abe1 RDX=ffffed100d9c7143
RSI=0000000000000001 RDI=ffffffff84078eaf RBP=0000000000000000 RSP=ffffffff85007e40
R8 =0000000000000000 R9 =ffff88806ce38a13 R10=ffffed100d9c7142 R11=0000000000000001
R12=fffffbfff0a064c0 R13=ffffffff858bd8d0 R14=0000000000000000 R15=dffffc0000000000
RIP=ffffffff84078afb RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1
ES =0000 0000000000000000 00000000 00000000
CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA]
SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA]
DS =0000 0000000000000000 00000000 00000000
FS =0000 0000000000000000 00000000 00000000
GS =0000 ffff88806ce00000 00000000 00000000
LDT=0000 fffffe0000000000 00000000 00000000
TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy
GDT= fffffe0000001000 0000007f
IDT= fffffe0000000000 00000fff
CR0=80050033 CR2=00007f0428066c80 CR3=000000000f546000 CR4=00350ef0
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
EFER=0000000000000d01
FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001fa0
FPR0=0000000000000000 0000 FPR1=0000000000000000 0000
FPR2=0000000000000000 0000 FPR3=0000000000000000 0000
FPR4=0000000000000000 0000 FPR5=0000000000000000 0000
FPR6=0000000000000000 0000 FPR7=0000000000000000 0000
YMM00=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM01=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM02=0000000000000000 0000000000000000 0000000000000000 bfe62e42fefa39ef
YMM03=0000000000000000 0000000000000000 0000ff0000000000 0000000000000000
YMM04=0000000000000000 0000000000000000 732f6c61636f6c2f 7273752f3d485441
YMM05=0000000000000000 0000000000000000 622f6c61636f6c2f 7273752f3a6e6962
YMM06=0000000000000000 0000000000000000 73752f3a6e696273 2f7273752f3a6e69
YMM07=0000000000000000 0000000000000000 6e69622f3a6e6962 732f3a6e69622f72
YMM08=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM09=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM10=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM13=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM14=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM15=0000000000000000 0000000000000000 0000000000000000 0000000000000000
info registers vcpu 1
RAX=000000000000002d RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800b7ff648
R8 =0000000000000000 R9 =000000000000002d R10=ffffffff82365d23 R11=000000000000000a
R12=000000000000002d R13=000000000000002d R14=ffffffff87381a20 R15=dffffc0000000000
RIP=ffffffff82364138 RFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0000 0000000000000000 00000000 00000000
CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA]
SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA]
DS =0000 0000000000000000 00000000 00000000
FS =0000 0000000000000000 00000000 00000000
GS =0000 ffff88806cf00000 00000000 00000000
LDT=0000 fffffe0000000000 00000000 00000000
TR =0040 fffffe000004a000 00004087 00008b00 DPL=0 TSS64-busy
GDT= fffffe0000048000 0000007f
IDT= fffffe0000000000 00000fff
CR0=80050033 CR2=00007ffc4be82000 CR3=000000000f546000 CR4=00350ee0
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
EFER=0000000000000d01
FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001fa0
FPR0=0000000000000000 0000 FPR1=0000000000000000 0000
FPR2=0000000000000000 0000 FPR3=0000000000000000 0000
FPR4=0000000000000000 0000 FPR5=0000000000000000 0000
FPR6=0000000000000000 0000 FPR7=0000000000000000 0000
YMM00=0000000000000000 0000000000000000 0000000000000000 414a7ea4902076f3
YMM01=0000000000000000 0000000000000000 0000000000000000 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f73d0d6a3e21fa4
YMM04=0000000000000000 0000000000000000 00007f47806b8a00 0000000000415710
YMM05=0000000000000000 0000000000000000 0000000000b12758 000000c00020a348
YMM06=0000000000000000 0000000000000000 0000000000505007 000000c00002f7c0
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 00000000004643c6 0000000000000000
YMM09=0000000000000000 0000000000000000 00000000004643c1 0000000000000000
YMM10=0000000000000000 0000000000000000 000000c0005d88c0 000000c000156840
YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM13=0000000000000000 0000000000000000 000000c0002946f0 000000c000080050
YMM14=0000000000000000 0000000000000000 000000c000294ba0 000000c000086150
YMM15=0000000000000000 0000000000000000 000000c0000ae900 000000c000294bd0